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可能なすべての解決方法を検索しましたが、まだ解決策が見つかっていません。私のJSPの4行目には、スコープ内でBeanが見つからないというエラーがあります。ここでjavax.servlet.ServletException：java.lang.InstantiationException：Beanレコードがスコープ内に見つかりません
は、ここに私のJSPコード
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<jsp:useBean id="records" type="java.sql.ResultSet" scope="request"></jsp:useBean>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<link rel="stylesheet"
href="http://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
<script
src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js"></script>
<script
src="http://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
<title>Gasoline eStore</title>
</head>
<body>
<h1>Gasoline eStore</h1>
<table class="table" align="center" border="1" cellpadding="2" cellspacing="2">
<tr>
<th>Name</th>
<th>Sales Amount</th>
<th>Sales Gross Commission</th>
<th>Sales Commission</th>
<th>Take Home Pay</th>
</tr>
<%
boolean empty = true;
while (records.next()) {
empty = false;
%>
<tr class="success">
<td align="center"><%=records.getInt("id") %></td>
<td align="center"><%=records.getString("gasType") %></td>
<td align="center"><%=records.getDouble("litervalue") %></td>
<td align="center"><%=records.getDouble("initialAmount") %></td>
<td align="center"><%=records.getDouble("vat") %></td>
<td align="center"><%=records.getDouble("totalAmount") %></td>
</tr>
<%
} %>
</table>
<% if(empty){ %>
<div class="form-group has-error">
<label class="control-label" for="inputError1">No records found.</label>
</div>
<% } %>
<form action="index.jsp" method="post">
<p><input class="btn btn-primary" type="submit" value="GO BACK">
</form>
</body>
</html>
である私のサーブレットが
package gas.store.controller;
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import gas.store.model.GasBean;
import gas.store.utility.DBConnectionUtil;
import java.sql.*;
public class ListRecordServlet extends HttpServlet {
private static final long serialVersionUID = 1L;
private Connection connection = null;
public void init() throws ServletException {
connection = DBConnectionUtil.getDBConnection();
}
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
doPost(request, response);
}
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
if(connection != null) {
ResultSet records = new GasBean().getAllRecordsTable(connection);
request.setAttribute("records", records);
request.getRequestDispatcher("listrecords.jsp").forward(request,response);
} else {
System.err.println("connection is NULL");
}
}
}``